The 'All The Lovers' singer - who is currently dating Spanish model Andres Velencoso - admits romance isn't always easy and has learnt over the years what is important and what's not.
She said: ''You have to work at love. I have never believed that marriage would be the ultimate. There are people who think a love story should last an entire lifetime. I tell myself it will last as long as it lasts, that way there are fewer disappointments.
''I'm wising up. More tolerant, less demanding. I am very happy today because Andres totally respects who I am. Whether I'm stepping off stage looking fabulous or waking up looking a sight, it's all the same to him. And when I'm spinning out of control for no reason, or feeling totally lost and am asking myself thousands of questions - Who am I? What do I want? Where am I going? - he is there.''
The 44-year-old beauty - who successfully beat breast cancer after being diagnosed in 2005 - says she's never been happier and loves being with Andres.
She told Britain's Hello! magazine: ''I am healed and very in love, that helps. Andres is handsome, kind and very easy to live with.''